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| subject: | Re: Antennas by Roy |
05-16-14 12:19 Roy Witt wrote to Ed Vance about Antennas by Roy
RW> {at}MSGID:
RW> Greetings Ed!
Howdy! Roy,
EV> 05-15-14 11:56 Roy Witt wrote to Ed Vance about Antennas by Roy
RW>> {at}MSGID:
RW>> Greetings Ed!
EV> Howdy! Roy,
EV> -snip-
EV>> So a Quagi looks like it has two square reflector sections instead
EV>> of reflector elements?
RW>> No, a Quagi has a quad reflector and driven element. The rest
RW>> are parasitic orhestra* leaders. 8^) > directors*
EV> Yes, Tom already set me right about Your antenna.
RW> Did he mention that the mirror of the driven loop is slightly
RW> larger than the driven loop?
I figured 'all by myself' the rear loop would be slightly larger than
the driven loop 'cuz reflector(s) are slightly larger than the driven
portion of the antennas I've read about.
-snip-
EV>> It has been a long time since I seen a Gizmotchee Antenna.
EV>> The ones I saw IIRC only had two sections, Yours has four.
RW>> Note that it has one driven element for either vertical or
RW>> horizontal polarization. Tha required two lengths of coax run
RW>> to a switch box at the operating station. I used RG8 for that.
RW>> Coax was cheap in c1969.
EV>> Remember I never heard them called by that name until You mentioned
EV>> it some time ago.
RW>> What were they called then?
I meant that I never heard of any name for those antennas.
To me they were just some antenna the CB'ers learned about, as I never
saw any mention of them in the literature that I read.
-snip-
EV> I forget who it was that made the V-80 Vertical that a friend sold me
EV> to use on 80M and 40M, I only now remembered it was called the V-80.
EV> That was my first Antenna and it was a long time ago too.
RW> An 40mtr inverted V with coils to make it electrically longer
RW> for 80mtr?
No, just two 1" O.D. aluminum pipes that was put together to make a
Long Vertical Antenna somewhere around 20 foot long, with a 3" Coil at
the bottom with a flea clip connected to the center conductor of coax
to place on a coil winding for tuning it to a frequency in the 80M Ham
Band.
For 40M the flea clip got put at the top winding of the coil attached
to the base of the vertical pipe.
A wire connected to the shield of the coax went down to my ground rod
because my Ham Shack was on the second floor.
I never thought of it b4 but what I used looked sorta like a Vertically
Polarized Dipole (Electrically) to my rig.
-snip-
RW>> I also have one of my wife holding a wave guide in front of the
RW>> back door to my shop; to show it in proportion to familar
RW>> things.
EV> I've seen them too, they're real small, but they do the job.
EV> -snip-
RW> Not this one. She's about 5'5" and the one she is holding is as
RW> wide as she is tall and the perportions of it to the doorway
RW> behind her and the pickup truck she's standing next to give you
RW> an idea of how big it really is.
One night someone talked about UHF at a Club Meeting and showed a
waveguide to the group.
It was a 12" long piece of copper sheet bent in a Rectangular Shape,
and was about 2" High and 2.5" across and a metal tube was in the
center of it and I think some Capacitors and maybe some Resistors.
-snip-
EV> But now a days, if someone doesn't like the color of my socks, they
EV> can sue me in court and win judgement against me.
EV> It worked at McDonalds over Hot Coffee didn't it?
RW> I dunno. Do you have scald marks where that coffee got to you?
Twasn't Me! I thought I saw the News say it was a Woman that took
McDonalds to Court, not a Man as I am.
... Johnson & Johnson Tagline: ...............
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